大宗作物的种植面积,历来是农业统计中的基本资料。大宗作物实种面积的资料,历年都采用逐级上报统计获得,很难获得准确数据。卫星遥感信息具有真实、宏观、及时的特点,利用卫星遥感进行大宗作物实种面积监测,是较为可靠而又经济的办法。MSS影像的地面分辨率较低,不能满足作物面积监测的要求。TM影像的地面分辨率较高,且有7个波段,可满足对大宗作物定性、定量分析的要求。下面介绍在江苏省高邮县利用TM影像进行大宗作物面积监测研究的情况。 The area planted with bulk crops has traditionally been the basic source in agricultural statistics. Information on the actual area of ​​bulk crops has been obtained by reporting statistics step by step over the years, making it difficult to obtain accurate data. Satellite remote sensing information has the characteristics of real, macroscopical and timely. It is a more reliable and economical method to monitor the real area of ​​bulk crops with satellite remote sensing. The ground resolution of MSS images is low, which can not meet the requirements of crop area monitoring. TM image ground resolution is high, and there are seven bands to meet the bulk crop qualitative and quantitative analysis requirements. The following describes the use of TM images in Gaoyou County, Jiangsu Province, for the monitoring of crop area.